"Illinois was the first state to enact a law governing the privacy of biometric data, such as fingerprints and retinal scans. The Illinois statute is the only one that includes a private right of action enabling lawsuits such as Rosenbach’s. The high court’s decision will determine how difficult it will be for plaintiffs to keep pressing such lawsuits."

According to Bloomberg, several other companies sued for similar reasons include Southwest Airlines Co., Wendy’s International Inc., Hooters Management Corp., Presence Health Network and many others.